General Science - Online Test
Q1. A drop of oil is placed on the surface of water. Which of the following statements is correct?
Answer : Option D
Explaination / Solution:
when any liquid is poured onto another liquid there are different phenomena that can take place depending on the properties of liquids:In case of crude oil and water -
The two liquids are non-miscible and the first is lighter than the second. The first liquid then spreads on the surface of the second liquid forming a thin layer. The thickness of this layer depends on the properties of the two liquids. This is the case for most hydrocarbons, including both refined products and crude oil of API gravity greater than 10.
Q2. Hydrogen sulphide reacts with lead acetate forming a black compound which reacts with hydrogen peroxide to form another compound. The colour of the compound is
Answer : Option C
Explaination / Solution:
Q3. Lymph contains
Answer : Option D
Explaination / Solution:
Lymph contains serum and WBC. Lymph is called as extracellular fluid that help in transport of fat and protein. It contains WBC, so also help in protection against the infection.
Q4. In fungi like ascomycetes and basidiomycetes, an intervening dikaryotic stage occur. Such condition is called
Answer : Option C
Explaination / Solution:
In fungi like ascomycetes and basidiomycetes, an intervening dikaryotic stage (n + n i.e. two nuclei per cell) occurs; such a condition is called a dikaryon and the phase is called dikaryo phase of fungus.
Q5. The absorption of water by seeds and drywood takes place by a special type of diffusion called
Answer : Option A
Explaination / Solution:
Imbibition is a special type of diffusion when water is absorbed by solids-colloids causing an enormous increase in volume. Examples include the absorption of water by seeds and dry wood.
Q6. Ionization enthalpy is lowest in
Answer : Option B
Explaination / Solution:
Metals have low ionization energy because of there tendency to lose electrons.
Q7. The increasing order of reduction of alkyl halides with zinc and dilute HCl is
Answer : Option C
Explaination / Solution:
As we move from I to Br to Cl,atomic size decreases,it becomes difficult to release the halogen as the bond length decreases.Hence I- is the best leaving group among halogens and reacts the fastest.
Q8. Steps taken towards liberalisation
Answer : Option C
Explaination / Solution:
To liberalise the Indian economy, industrial licensing was abolished, many industries reserved for the public sector were dereserved and import licensing was also abolished in most industries.
Q9. of combustion of methane is - X kJ . The value of is
Answer : Option A
Explaination / Solution:
CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (l)
We know, RT
Δng is negative as product water in combustion reaction is in liquid state.
This implies ΔHo will be more negative than ΔUo
Hence, ΔHo < ΔUo
Q10. If exchange rate increases, this will make
Answer : Option A
Explaination / Solution:
No Explaination.
